The Quick Answer
If you want us to pick one window: September to November. Water temperature 26–28°C, visibility consistently 30 metres and often 40+, fewer tourists than summer, calm seas across most of the Red Sea, and the start of oceanic whitetip shark season at offshore reefs. This is when the locals who run the dive centres take their own days off to dive.
If budget matters more than perfect conditions: January and February offer the lowest prices of the year with still-excellent diving. You will need a thicker wetsuit, and the occasional windy day may limit offshore access, but the reefs are quiet and the visibility is often at its annual peak.
If you want warm water above all else: June to August delivers bath-like temperatures up to 30°C in shallow areas. The trade-off is hotter air temperatures, stronger sun, and more crowded boats. For some divers, the warmth is worth it. For others, the heat makes surface intervals uncomfortable.
Winter: December–February
Water Temperature & Visibility
Water temperature drops to 21–23°C, the coolest of the year. This is not cold by global standards, but it is cool enough that a 5mm wetsuit is the minimum most divers need, and a 7mm suit with a hooded vest is common in January and February. Visibility, paradoxically, is often at its best in winter. The lack of plankton blooms and the absence of summer dust storms mean 30–40 metre visibility is routine, and 50 metres is not exceptional on the right day.
Wind & Sea State
Winter is the windiest season. North-easterly fronts roll through every 5–10 days, and while they rarely last more than 48 hours, they can make offshore crossings uncomfortable or impossible. Sites like Abu Nuhas, 45 kilometres northwest of Hurghada, are sometimes cancelled for day boats when the wind is up. Liveaboards handle these conditions better, but even they adjust itineraries. The sheltered reefs close to Hurghada, Giftun Island and Abu Ramada, remain diveable almost every day.
Marine Life
Winter is not the season for whale sharks or manta rays, but it is excellent for macro photography. Cooler water means less plankton in the water column, which means sharper images and less backscatter from your strobes. Hammerhead sharks maintain a winter presence at Jackson Reef and Carless Reef, though they are deeper and more scattered than in summer. Oceanic whitetip sharks are present at Brothers and Elphinstone through December, with peak season starting in October and running into early winter.
Who Should Come in Winter
Divers who prioritise visibility and quiet reefs over warm water. Photographers who want crisp conditions. Budget travellers who can tolerate a cooler wetsuit in exchange for lower prices and empty dive boats. If you are planning a training course, winter is viable but not ideal, the cooler water adds a discomfort factor that distracts from skill learning.
| Water Temperature | 21–23°C |
|---|---|
| Visibility | 30–40m, often 50m+ |
| Wetsuit | 5mm minimum, 7mm recommended Jan–Feb |
| Wind | Moderate to strong, occasional offshore cancellations |
| Crowds | Low, except Christmas/New Year weeks |
| Best For | Visibility, photography, budget, quiet reefs |
Spring: March–May
The Transition Season
Spring is the pivot point of the Red Sea diving year. Water warms from 22°C in March to 26°C by May. Air temperatures climb from pleasant to hot. The first plankton blooms appear, which can temporarily reduce visibility in shallow areas from 35m to 20m on bad days, but which also bring the seasonal pelagics that define late spring and summer.
Marine Life Highlights
The first whale sharks of the year are typically reported in March at offshore Hurghada sites. They are not yet reliable, sightings remain rare and lucky, but they begin appearing. By May, whale shark encounters become consistent rather than exceptional. Spinner dolphin activity at Sha'ab El Erg peaks in May. Cleaning stations become more active as fish populations recover from winter slowdowns. Coral spawning preparations begin in some species, though the actual event happens later in summer.
Crowds & Pricing
March is still relatively quiet until the Easter holidays, which typically fall in late March or early April and drive the first surge of European tourists. April and May are busy, particularly around the Thistlegorm and Abu Nuhas, which are standard stops for liveaboards running northern Red Sea itineraries. Book accommodation and dive slots at least a month ahead for April and May.
Who Should Come in Spring
Divers who want a balance of warm water and good visibility. Whale shark hunters targeting May. Families combining diving with snorkelling, the water is warm enough for children by April. First-time divers taking Open Water courses, spring conditions are comfortable without the extreme heat of summer.
| Water Temperature | 22–26°C |
|---|---|
| Visibility | 25–35m, occasionally reduced by plankton |
| Wetsuit | 5mm March–April, 3mm May |
| Wind | Generally calm, occasional spring storms |
| Crowds | Moderate, building through Easter |
| Best For | Training, whale sharks (May), balanced conditions |
Summer: June–August
Heat Above and Below
Water temperature reaches 28–30°C in shallow areas, the warmest of the year. At depth, the thermocline still delivers cooler water, 24–25°C below 25 metres, which is a relief on deep wreck dives. Air temperatures peak at 35–40°C, making surface intervals on boats genuinely uncomfortable after midday. Most operators schedule early departures, 7am, to complete two dives before the heat becomes oppressive.
Visibility & Plankton
Visibility remains good at 20–40m, but summer plankton blooms can reduce clarity on certain days, particularly in sheltered bays. This is the trade-off for the warm water. Offshore sites, where currents flush the water more effectively, maintain better visibility than inshore reefs. The plankton also attracts filter feeders, which is why whale sharks and mantas are most commonly seen in summer.
Marine Life
Peak whale shark season runs June through August, with the highest concentration at offshore sites and in the southern Red Sea around Marsa Alam. Hammerhead sharks are most reliably seen at Jackson Reef and offshore walls in July and August. Manta rays appear at southern cleaning stations. The trade-off is that the reefs are crowded, the boats are full, and the surface intervals are hot.
Who Should Come in Summer
Divers who prioritise warm water above all else. Whale shark and hammerhead hunters. Snorkellers who want extended water time without getting cold. Divers on a budget, summer is the low season for European travellers and prices drop accordingly. Avoid if you dislike heat, crowded boats, or if you are planning a training course, the discomfort of a wetsuit in 40°C air is a distraction.
| Water Temperature | 28–30°C shallow, 24–25°C below 25m |
|---|---|
| Visibility | 20–40m, variable with plankton |
| Wetsuit | 3mm shorty or rash guard |
| Wind | Light to moderate, afternoon breezes |
| Crowds | High, peak European holiday season |
| Best For | Warm water, whale sharks, budget deals |
Autumn: September–November
The Best Overall Window
If you have one week in the Red Sea and you can choose any time of year, pick October. Water temperature holds at 25–28°C, comfortable in a 3mm full suit or shorty. Visibility often hits 40m+. The air has cooled from summer peaks to a pleasant 27–32°C. Surface intervals on boats stop being miserable. The crowds have thinned from August peaks. And the marine life is at its most diverse.
Marine Life
October marks the start of oceanic whitetip shark season at Brothers and Elphinstone, a reliable window that runs through December. Hammerhead season at Jackson Reef continues into early October. Whale sharks are still present in September, though less reliably than in summer. Spinner dolphins remain active at Sha'ab El Erg. Coral spawning events, triggered by the lunar cycle, sometimes occur in September. For shark-focused divers, October is when liveaboard demand for southern itineraries peaks.
Conditions
Sea state is typically settled, with fewer windy spells than winter or spring. Offshore sites are accessible on most days. The water is still warm from summer but the air is cooling, which creates the most comfortable diving conditions of the year. November continues this pattern but with slightly cooler water, 23–25°C, which pushes most divers back into 5mm suits by late November.
Who Should Come in Autumn
Everyone. This is the season with the fewest compromises. Photographers get visibility and light. Shark hunters get oceanic whitetips. Training divers get comfortable water and air. Liveaboard divers get reliable access to offshore sites. The only downside is that it is the worst-kept secret in Red Sea diving, so book early.
| Water Temperature | 25–28°C (Sep–Oct), 23–25°C (Nov) |
|---|---|
| Visibility | 30–40m+, often the best of the year |
| Wetsuit | 3mm Sep–Oct, 5mm November |
| Wind | Calm to moderate, most reliable offshore access |
| Crowds | Moderate, building toward peak season |
| Best For | Everything. The single best window for most divers. |
Month-by-Month at a Glance
| Month | Water °C | Air °C | Visibility | Wetsuit | Key Feature |
|---|---|---|---|---|---|
| January | 22 | 23 / 12 | 30–40m | 7mm | Quiet reefs, excellent visibility |
| February | 22 | 23 / 13 | 25–35m | 7mm | Macro photography, hammerheads |
| March | 22 | 26 / 15 | 25–35m | 5mm | First whale sharks, warming water |
| April | 23 | 30 / 19 | 25–35m | 5mm | Peak training season, Easter crowds |
| May | 25 | 34 / 23 | 30–40m | 5mm | Reliable whale sharks, dolphins |
| June | 27 | 37 / 26 | 20–40m | 3mm | Warmest water, early departures |
| July | 28 | 38 / 27 | 20–40m | 3mm | Peak hammerhead season |
| August | 29 | 38 / 27 | 20–40m | 3mm | Bath-warm water, peak heat |
| September | 28 | 35 / 25 | 30–40m | 3mm | Cooling air, still warm water |
| October | 27 | 32 / 22 | 30–40m+ | 3mm | Best overall month, oceanic whitetips |
| November | 25 | 27 / 17 | 30–40m | 5mm | Calm seas, shoulder season prices |
| December | 23 | 23 / 13 | 25–35m | 5mm | Quiet early month, holiday crowds late |
Best Time by What You Want
Best Visibility
September through November, especially October. Mid-October consistently delivers 40m+ on most sites. Winter also offers excellent visibility, but the wind is more variable. Avoid August if visibility is your priority, plankton can reduce clarity on inshore reefs.
Whale Sharks
May through August, peak June and July. Offshore Hurghada sites and southern Marsa Alam are most productive. Whale sharks are filter feeders following plankton blooms, so they are unpredictable by nature, but summer is when your odds are highest.
Hammerhead Sharks
August through early October at Jackson Reef and deep offshore walls. Sightings are rare in winter despite occasional persistent rumours. For hammerheads, you need warm water and the right current conditions, which converge in late summer.
Oceanic Whitetip Sharks
October through December, peak November. Brothers Islands and Elphinstone Reef are the primary locations. These are pelagic sharks that patrol open water around offshore reefs, and they become reliable in autumn as water temperatures start to drop.
Manta Rays
May through September at southern sites, particularly around Marsa Alam and Daedalus Reef. Less common in the northern Red Sea around Hurghada, though occasional sightings happen at Elphinstone.
Quietest Reefs
January and February. Late November and early December are also good outside the holiday weeks. If you want to dive a site without sharing it with three other boats, winter is your window.
Training & Beginners
April through June or September through November. Avoid the extreme heat of July and August, which makes wetsuit wearing during surface intervals genuinely unpleasant. Avoid the cooler months of December through March for first-time divers, the cold adds an unnecessary stress factor.
Lowest Prices
January through February and late November through early December, excluding the Christmas and New Year weeks. Summer also offers lower prices than peak season, but the heat is the trade-off.
What to Pack by Season
Exposure Protection
The right wetsuit is the single most important piece of equipment for enjoying Red Sea diving. Too thin and you will cut dives short. Too thick and you will overheat on the boat. Here is the local operator baseline: 7mm in January and February, 5mm from March through May and September through November, 3mm from June through August. A hooded vest is worth bringing in winter. Gloves are useful for handling mooring lines and for protection against fire coral.
Boat Clothing
Wind chill is real at 25 knots on a wet surface interval. Bring a windproof layer year-round. In summer, prioritise UV protection: a rash guard, neck buff, and reef-safe sunscreen. The sun is relentless and reflection off the water doubles exposure. In winter, bring a fleece or light jacket for surface intervals and a beanie for the boat ride back.
Other Essentials
- Reef-safe sunscreen (non-negotiable, oxybenzone kills coral)
- Polarised sunglasses for the boat
- A wide-brimmed hat or cap
- Water bottle (hydration matters more than you think)
- Seasickness medication if you are prone (the crossing to Abu Nuhas can be rough)
- A dry bag for electronics
Booking Strategy
When to Reserve
Spring (March–May) and autumn (September–November) are the best windows, which means availability tightens first. If your trip must hit April–May or October–November, book accommodation and dive packages at least two months ahead. For liveaboards, six months is not excessive for peak-season itineraries. Summer is easier to book at short notice. Winter offers the most flexibility, except for the Christmas and New Year weeks which are peak demand and peak pricing.
Flexibility Matters More Than the Calendar
Wind in the Red Sea is driven by fronts that come through every 5–10 days at any time of year. A perfect calm December week is possible. A windy June week is possible. Your operator's flexibility to switch sites based on conditions matters more than the specific month you book. A good dive centre will have a Plan B reef list for windy days and will not cancel the day just because the primary site is inaccessible.
Egyptian Holidays
Domestic tourism surges during Egyptian school holidays and major Islamic holidays (Eid al-Fitr, Eid al-Adha), which shift annually based on the lunar calendar. These drive dive boat availability and accommodation prices in ways that international tourists often overlook. Check the Egyptian calendar for your travel dates and book accordingly.
Frequently Asked Questions
Can I dive in Hurghada year-round?
Yes. The Red Sea does not have a closed season. Every month delivers diveable conditions. The question is not whether you can dive, but what conditions you will get and what marine life you are likely to see. January and February are the most challenging months due to wind and cooler water, but even then, local reefs are accessible most days.
Is summer too hot for diving?
The water is never too hot. At 28–30°C, it is bath-like and comfortable. The air temperature is the challenge. Surface intervals on boats in July and August, particularly after midday, can be oppressive at 35–40°C. Most operators run early departures to avoid this. If you can tolerate the heat, summer offers the warmest water and the best pelagic action. If you cannot, avoid July and August.
Does it ever rain in Hurghada?
Rarely, and when it does, it is brief. Hurghada receives approximately 2mm of rainfall per year. A rainy day is not a factor in dive planning. Wind is the weather variable that matters.
What is the thermocline like?
In summer, a thermocline forms around 25 metres where water temperature drops 3–4°C. This means a deep wreck dive in August can feel cooler than a shallow reef dive, even though the surface temperature is at its peak. In winter, the thermocline disappears and temperatures are uniform from surface to depth. Plan your wetsuit for the coldest depth you intend to reach, not the surface temperature.
How far ahead should I book a liveaboard?
For peak season (October–November and April–May), six months ahead is advisable. For summer or winter, two to three months is usually sufficient. The best liveaboards fill first, and last-minute availability is rare in peak windows.
Are there any months to absolutely avoid?
No. Every month has its strengths. January and February are the windiest and coolest, but they also offer the best visibility and the quietest reefs. July and August are the hottest, but they deliver the warmest water and peak whale shark season. The only weeks to avoid if you want quiet and value are the Christmas/New Year and Easter holiday periods, when prices peak and crowds surge.
Ready to Plan Your Trip?
The Red Sea rewards preparation. Pick the right month for your priorities, pack the right wetsuit for the water temperature, and choose an operator who knows how to read the conditions. We run trips year-round from Hurghada, and we will tell you honestly what to expect for your dates. Get in touch and we will build an itinerary that matches the season.
